Idea for the Q&A below: The relevant information is: It is a planned city and was built mainly in the 1980s, replacing the country's most populous city of Lagos as the capital on 12 December 1991.
Q: Abuja (/ əˈbuːdʒə /) is the capital city of Nigeria located in the centre of the country within the Federal Capital Territory (FCT). It is a planned city and was built mainly in the 1980s, replacing the country's most populous city of Lagos as the capital on 12 December 1991. Abuja's geography is defined by Aso Rock, a 400-metre (1,300 ft) monolith left by water erosion. The Presidential Complex, National Assembly, Supreme Court and much of the city extend to the south of the rock. Zuma Rock, a 792-metre (2,598 ft) monolith, lies just north of the city on the road to Kaduna State.

Answer this question based on the passage: when was the federal capital moved from lagos to abuja?
A: 12 December 1991

Idea for the Q&A below: This is the relevant information: HMHS Britannic (/ brɪˈtænɪk /) was the final vessel built of the White Star Line's Olympic class of steamships, she was the fleet mate of both the RMS Olympic and the RMS Titanic and was intended to eventually enter service as the transatlantic passenger liner.
Q: HMHS Britannic (/ brɪˈtænɪk /) was the final vessel built of the White Star Line's Olympic class of steamships, she was the fleet mate of both the RMS Olympic and the RMS Titanic and was intended to eventually enter service as the transatlantic passenger liner.

Answer this question based on the passage: what was the name of the titanics sister ship?
A: HMHS Britannic

Idea for the Q&A below: The relevant information is: The first multivibrator circuit, the classic astable multivibrator oscillator (also called a plate-coupled multivibrator) was first described by Henri Abraham and Eugene Bloch in Publication 27 of the French Ministère de la Guerre, and in Annales de Physique 12, 252 (1919).
Q: The first multivibrator circuit, the classic astable multivibrator oscillator (also called a plate-coupled multivibrator) was first described by Henri Abraham and Eugene Bloch in Publication 27 of the French Ministère de la Guerre, and in Annales de Physique 12, 252 (1919). Since it produced a square wave, in contrast to the sine wave generated by most other oscillator circuits of the time, its output contained many harmonics above the fundamental frequency, which could be used for calibrating high frequency radio circuits. For this reason Abraham and Bloch called it a multivibrateur. It is a predecessor of the Eccles-Jordan trigger which was derived from the circuit a year later.

Answer this question based on the passage: what is the other name of astable multivibrator?
A: plate - coupled multivibrator

Idea for the Q&A below: The relevant information to answer the above question is: It came into being on 31 May 1910 with the unification of four previously separate British colonies: the Cape, Natal, Transvaal and Orange River colonies.

Q: The Union of South Africa (Dutch: Unie van Zuid-Afrika, Afrikaans: Unie van Suid-Afrika) is the historic predecessor to the present-day republic of South Africa. It came into being on 31 May 1910 with the unification of four previously separate British colonies: the Cape, Natal, Transvaal and Orange River colonies. It included the territories formerly part of the Boer republics annexed in 1902, the South African Republic and the Orange Free State.

Based on this passage, when was the union of south africa formed?
A: 31 May 1910